This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-processmaker-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 18:08:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 37455f42b39f3114f66bbeceead41731566007d5 * md5sum 521c3d4dc987ba0f43ea7a1d2154386f You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXYSoAAoJEIXCXpWhbrlNRhQH/1BoDrQgJtUpQjaIQsx7rxbc 3aGaOc8hmVOEeYGB5QpNXfMvP2bZZGuqHnTIas2L85FTZ3drwAfvY6MYEk4fR1e4 MCIIff+bW1SJ6MsfwsFdRd83cxEASz1ISooAhMT/9cI2wXD59dhnHq7F8k3EAYTv 26nlTFHYIWDnW04PC2caq/82suCR/c0Fz2xu8PjTAKS2qEpvYDC00DvwY8zaecIr UiXQQc9yBCzv7PV8mp2ssGLJ5ZwtO7AImZ0+fnjGmBqBAiwHX9LJOqmOyi0ImF6e m504Hu7xNNffJmKZFgE/zp9dR/yuaLB15LDrY5eQq9bq2rvcFkZVtJNHR0RXLjg= =Kasi -----END PGP SIGNATURE-----